We use the Marquis, Mecke, Mandelin, and Simon reagents for testing (pictured below). These reagents work by reacting with substance to give one of several characterized reactions.

testing kitsThe resulting color change can indicate the presence of certain substances. Our tests cannot indicate purity or concentration – simply the presence or lack of specific substances.


The reagents have the following reactions in the table below. These are the main things we look for when testing, however the kits are able to test for more substances then are listed in the table below. (the listed ones just include the most common things people come across)


The reaction sheet for the testing kits we currently use.